CN111810512A - Bolt assembly with self-locking function - Google Patents
Bolt assembly with self-locking function Download PDFInfo
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- CN111810512A CN111810512A CN202010917375.XA CN202010917375A CN111810512A CN 111810512 A CN111810512 A CN 111810512A CN 202010917375 A CN202010917375 A CN 202010917375A CN 111810512 A CN111810512 A CN 111810512A
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- locking
- bolt body
- groove
- sliding
- annular step
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- 230000004048 modification Effects 0.000 description 2
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- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a bolt assembly with a self-locking function, which comprises a locking ring and a bolt body, wherein the middle part of the locking ring is provided with a groove, the upper end of the groove is opened, the groove is used for embedding the head part in the bolt body, and the bottom of the groove is provided with a through hole; a plurality of locking grooves which are uniformly distributed in the circumferential direction are formed in the locking ring positioned at the bottom of the groove, a hexagonal sunk groove is formed in the middle of the upper end face of the head in the bolt body, four sliding cavities which are uniformly distributed in the circumferential direction and have an opening at the lower end are formed in the lower end face of the head in the bolt body, an arc-shaped locking block is connected in each sliding cavity in a sliding mode, a tooth head is arranged in the middle of the lower end face of each locking block, and a driving structure for driving the locking blocks to move along the sliding cavities so that the tooth heads on the locking blocks are separated from the locking grooves or clamped with the locking grooves is arranged in the bolt body; the bolt body can be effectively prevented from loosening, namely, two parts fastened by the bolt body can be prevented from loosening.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to a bolt assembly with a self-locking function.
Background
Bolt assembly is the device that is used for fastening two parts together, and present bolt assembly does not have the self-locking structure after fastening two parts because bolt assembly itself and the part that needs the fastening between, so, when the part after bolt assembly fastening vibrations phenomenon appears, the phenomenon that bolt assembly pine takes off appears easily, so, can make the phenomenon that takes off between two parts that need the fastening to can influence the fixed reliability of two parts.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the bolt assembly with the self-locking function, the lock ring in the bolt assembly is embedded with one part to be fixed, and the bolt body is screwed with the other part to be fixed through the threads, so that the self-locking function can be realized between the bolt body and the lock ring, and thus, when two parts fastened through the bolt body vibrate, the phenomenon that the bolt body is loosened can be effectively avoided, namely, the phenomenon that the two parts fastened through the bolt body are loosened can be avoided, and the reliability of the two parts fastened can be improved.
The bolt assembly with the self-locking function comprises a locking ring and a bolt body, wherein the middle part of the locking ring is provided with a groove with an opening at the upper end and used for embedding the head part in the bolt body, the bottom of the groove is provided with a through hole used for a screw rod part in the bolt body to pass through, and the through hole and the locking ring are coaxially arranged; be provided with a plurality of lock grooves that are circumference evenly distributed in the catch that is located the recess bottom, the up end middle part of the head in the bolt body is provided with the heavy groove of regular hexagon shape, the heavy groove is used for cooperateing with outer hexagonal spanner's tip, be provided with four on the lower terminal surface of the head in the bolt body and be circumference evenly distributed and lower extreme open-ended smooth chamber, equal sliding connection has the locking piece of arc form in every smooth chamber, the lower terminal surface middle part of every locking piece all is provided with the tooth head that is used for rather than one of them lock groove block respectively, the inside of bolt body is provided with and is used for driving the locking piece and removes so that the tooth head on the locking piece breaks away from the lock groove or with the drive structure of lock groove block along smooth chamber.
The bolt assembly with the self-locking function comprises a driving structure, a driving structure and a driving structure, wherein the driving structure comprises a guide pillar and a spring, a blind hole is formed in a bolt body positioned below a sinking groove, the lower end of the guide pillar is inserted into the blind hole and is in sliding connection with the blind hole, the spring is arranged in the blind hole, and two ends of the spring are respectively abutted against the inner bottom of the blind hole and the lower end surface of the guide pillar; a sliding rod is integrally formed in the middle of the upper end face of each locking block, a sliding hole for the sliding rod to insert and slide is formed in the top of each sliding cavity, a sliding way is arranged in the bolt body between each sliding hole and the blind hole, each sliding way extends along the radial direction of the bolt body, a top rod is connected in each sliding way in a sliding mode, one side, facing the top rod, of each sliding rod is provided with a slot for inserting the outer end part of the top rod, the lower surface of the outer end part of each top rod is provided with a first inclined surface, and the inner bottom of each slot is provided with a second inclined surface matched with the first inclined surface to slide; a first annular step and a second annular step for supporting the inner end part of the ejector rod are arranged on the outer peripheral wall of the guide pillar, the first annular step is positioned above the second annular step, an annular conical surface with a small upper part and a large lower part is arranged between the first annular step and the second annular step, the upper end of the annular conical surface is connected with the lower end of the first annular step, and the lower end of the annular conical surface is connected with the upper end of the second annular step; magnets are embedded on the upper end faces of the two end parts of each locking block and are used for being magnetically attracted with the bolt body to drive the locking blocks to move upwards for resetting; an expansion hole with the inner diameter larger than that of the blind hole is arranged between the sinking groove and the blind hole and is used for the guide pillar to pass through; when the inner end part of the ejector rod is abutted against the first annular step, the outer end part of the ejector rod is completely retracted into the slideway, at the moment, the locking block moves upwards to reset, and the tooth head on the locking block is separated from the locking groove on the locking ring; when the inner end part of the ejector rod is supported on the second annular step, the outer end part of the ejector rod pushes the locking block to move downwards to the place, and at the moment, the tooth head on the locking block is clamped with the locking groove on the locking ring; a channel for the ejector rod to pass through and for the ejector rod to be installed in the slide way is arranged in the bolt body positioned on the outer side of each slide hole; by adopting the driving structure, after the end part of the outer hexagonal wrench is inserted into the sinking groove, the end part of the outer hexagonal wrench can push the guide pillar to move downwards to the place, at the moment, the inner end part of the ejector rod can be separated from the second annular step, meanwhile, under the magnetic attraction of the magnet on the locking block and the bolt body, the locking block can move upwards to the place, meanwhile, the locking block can drive the ejector rod to contract inwards, after the locking block moves upwards to the place, the tooth head on the lower end surface of the locking block can be separated from the locking groove on the locking ring, thus, the bolt body and the locking ring can be unlocked, and the bolt body can be rotated by the outer hexagonal wrench; when the end part of the outer hexagonal wrench is pulled out of the sinking groove, the spring can push the guide post to move upwards for resetting, at the moment, under the action of the annular conical surface, the annular conical surface can push the ejector rod outwards, finally, the inner end part of the ejector rod can be supported on the second annular step again, meanwhile, after the ejector rod moves outwards for resetting, the locking block can move downwards for resetting under the matching action of the first inclined surface on the ejector rod and the second inclined surface on the slide rod, at the moment, the tooth head on the lower end surface of the locking block can be clamped with the locking groove on the locking ring again, and therefore the locking of the bolt body and the locking ring is realized; the application aims to install the ejector rod into the slide way through the arrangement of the channel, namely when the spring and the guide post are installed in the blind hole and the lock block is not installed on the bolt body, the ejector rod can be installed into the slide way through the channel, after the ejector rod is installed in the slide way, the inner end part of the ejector rod is abutted against the first annular step on the guide post (after the inner end part of the ejector rod is abutted against the first annular step, the outer end part of the ejector rod can be retracted into the slide way, so that the slide rod on the lock block can be inserted into the slide hole, namely, the lock block can be installed in the slide cavity), then the lock block is installed in the slide cavity, after the spring, the guide post, the ejector rod and the lock block are assembled with the bolt body, the spring can drive the guide post to move upwards, at the inner end part of the ejector rod can be supported on the second annular step, so under the cooperation action of the first inclined plane on the ejector rod and, the locking block can be moved downwards to be reset.
The bolt assembly with the self-locking function is characterized in that the height of the guide pillar above the first annular step is the same as that of the expansion hole; after adopting this kind of structure, move down the back that targets in place at the guide pillar, insert the heavy groove at outer hexagonal spanner's tip promptly in, the guide pillar that is located first annular step top can enter into the expansion hole completely, so, can avoid the guide pillar to cause the interference to outer hexagonal spanner's tip.
The bolt assembly with the self-locking function is characterized in that a plurality of saw tooth grooves which are uniformly distributed in the circumferential direction are formed in the outer circumferential wall of the locking ring, and each saw tooth groove extends along the axial direction of the locking ring; through the setting of sawtooth groove, can further increase the catch and treat the frictional force between the counter sink in the fixed part, can effectively avoid the catch to appear treating the phenomenon of fixed part free rotation relatively promptly.
After the locking ring inside the bolt body is embedded with one part to be fixed and the bolt body is screwed with the other part to be fixed, the self-locking function can be realized between the bolt body and the locking ring, so that when two parts fastened through the bolt body vibrate, the bolt body can be effectively prevented from loosening, namely the two parts fastened through the bolt body can be prevented from loosening, and the reliability of the two parts fastened can be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic top view of the locking ring;
FIG. 2 is a cross-sectional structural view of the locking collar;
FIG. 3 is a schematic top view of the bolt body;
FIG. 4 is a bottom view of the bolt body;
FIG. 5 is a schematic cross-sectional view of the bolt body;
FIG. 6 is a schematic perspective view of the locking block;
FIG. 7 is a schematic top view of the magnet engaged with the lock block;
FIG. 8 is a cross-sectional view of the end of the alien wrench inserted into a counterbore in the bolt body;
fig. 9 is a schematic cross-sectional view after the ram is installed in the bolt body and the end of the alien wrench is inserted into the counterbore in the bolt body while the lock block is installed in the slide cavity.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The bolt component with the self-locking function comprises a locking ring 1 and a bolt body 2, wherein the middle part of the locking ring 1 is provided with a groove 11 which is provided with an opening at the upper end and is used for embedding a head part 21 in the bolt body 2, the bottom of the groove 11 is provided with a through hole 12 for a screw rod part 22 in the bolt body 2 to pass through, and the through hole 12 and the locking ring 1 are coaxially arranged; be provided with a plurality of locked grooves 13 that are circumference evenly distributed in the catch 1 that is located recess 11 bottom, the up end middle part of the head 21 in the bolt body 2 is provided with hexagonal shape's heavy groove 23, heavy groove 23 is used for cooperating with the tip of outer hexagonal spanner 3, be provided with four on the lower terminal surface of the head 21 in the bolt body 2 and be circumference evenly distributed and lower extreme open-ended smooth chamber 24, equal sliding connection has the locking piece 4 of arc form in every smooth chamber 24, the lower terminal surface middle part of every locking piece 4 all is provided with the tooth head 41 that is used for respectively rather than one of them locked groove 13 block, the inside of bolt body 2 is provided with and is used for driving locking piece 4 and removes so that the tooth head 41 on the locking piece 4 breaks away from locked groove 13 or with the drive structure of locked groove 13 block along smooth chamber 24.
The driving structure comprises a guide post 5 and a spring 6, a blind hole 25 is arranged in the bolt body 2 below the sinking groove 23, the lower end of the guide post 5 is inserted into the blind hole 25 and is in sliding connection with the blind hole 25, the spring 6 is arranged in the blind hole 25, and two ends of the spring 6 are respectively abutted against the inner bottom of the blind hole 25 and the lower end surface of the guide post 5; a sliding rod 42 is integrally formed in the middle of the upper end face of each locking block 4, a sliding hole 26 for the sliding rod 42 to insert and slide is formed in the top of each sliding cavity 24, a sliding way 27 is formed in the bolt body 2 between each sliding hole 26 and the blind hole 25, each sliding way 27 extends along the radial direction of the bolt body 2, a top rod 7 is connected in each sliding way 27 in a sliding mode, a slot 43 for inserting the outer end part of the top rod 7 is formed in one side, facing the top rod 7, of each sliding rod 42, a first inclined surface 71 is formed in the lower surface of the outer end part of each top rod 7, and a second inclined surface 44 matched with the first inclined surface 71 to slide is formed in the inner bottom of each slot 43; a first annular step 51 and a second annular step 52 for supporting the inner end part of the top rod 7 are arranged on the outer peripheral wall of the guide post 5, the first annular step 51 is positioned above the second annular step 52, an annular conical surface 53 with a small upper part and a large lower part is arranged between the first annular step 51 and the second annular step 52, the upper end of the annular conical surface 53 is connected with the lower end of the first annular step 51, and the lower end of the annular conical surface 53 is connected with the upper end of the second annular step 52; magnets 8 are embedded on the upper end faces of the two end parts of each locking block 4, and the magnets 8 are magnetically attracted with the bolt body 2 to drive the locking blocks 4 to move upwards for resetting; an expansion hole 28 with the inner diameter larger than that of the blind hole 25 is arranged between the sinking groove 23 and the blind hole 25, and the expansion hole 28 is used for the guide pillar 5 to pass through; when the inner end part of the ejector rod 7 is abutted against the first annular step 51, the outer end part of the ejector rod 7 is completely retracted into the slide way 27, at the moment, the lock block 4 moves upwards to reset, and the tooth head 41 on the lock block 4 is separated from the lock groove 13 on the lock ring 1; when the inner end part of the ejector rod 7 is supported on the second annular step 52, the outer end part of the ejector rod 7 pushes the locking block 4 to move downwards to the proper position, and at the moment, the tooth head 41 on the locking block 4 is clamped with the locking groove 13 on the locking ring 1; a channel 29 for the mandril 7 to pass through and for the mandril 7 to be installed in the slideway 27 is arranged in the bolt body 2 outside each sliding hole 26; by adopting the driving structure, after the end part of the outer hexagonal wrench is inserted into the sinking groove, the end part of the outer hexagonal wrench can push the guide pillar to move downwards to the place, at the moment, the inner end part of the ejector rod can be separated from the second annular step, meanwhile, under the magnetic attraction of the magnet on the locking block and the bolt body, the locking block can move upwards to the place, meanwhile, the locking block can drive the ejector rod to contract inwards, after the locking block moves upwards to the place, the tooth head on the lower end surface of the locking block can be separated from the locking groove on the locking ring, thus, the bolt body and the locking ring can be unlocked, and the bolt body can be rotated by the outer hexagonal wrench; when the end part of the outer hexagonal wrench is pulled out of the sinking groove, the spring can push the guide post to move upwards for resetting, at the moment, under the action of the annular conical surface, the annular conical surface can push the ejector rod outwards, finally, the inner end part of the ejector rod can be supported on the second annular step again, meanwhile, after the ejector rod moves outwards for resetting, the locking block can move downwards for resetting under the matching action of the first inclined surface on the ejector rod and the second inclined surface on the slide rod, at the moment, the tooth head on the lower end surface of the locking block can be clamped with the locking groove on the locking ring again, and therefore the locking of the bolt body and the locking ring is realized; the application aims to install the ejector rod into the slide way through the arrangement of the channel, namely when the spring and the guide post are installed in the blind hole and the lock block is not installed on the bolt body, the ejector rod can be installed into the slide way through the channel, after the ejector rod is installed in the slide way, the inner end part of the ejector rod is abutted against the first annular step on the guide post (after the inner end part of the ejector rod is abutted against the first annular step, the outer end part of the ejector rod can be retracted into the slide way, so that the slide rod on the lock block can be inserted into the slide hole, namely, the lock block can be installed in the slide cavity), then the lock block is installed in the slide cavity, after the spring, the guide post, the ejector rod and the lock block are assembled with the bolt body, the spring can drive the guide post to move upwards, at the inner end part of the ejector rod can be supported on the second annular step, so under the cooperation action of the first inclined plane on the ejector rod and, the locking block can be moved downwards to be reset.
The height of the guide post 5 above the first annular step 51 is the same as the height of the expansion hole 28; after adopting this kind of structure, move down the back that targets in place at the guide pillar, insert the heavy groove at outer hexagonal spanner's tip promptly in, the guide pillar that is located first annular step top can enter into the expansion hole completely, so, can avoid the guide pillar to cause the interference to outer hexagonal spanner's tip.
A plurality of sawtooth grooves 14 which are uniformly distributed in the circumferential direction are formed in the outer circumferential wall of the locking ring 1, and each sawtooth groove 14 extends in the axial direction of the locking ring 1; through the setting of sawtooth groove, can further increase the catch and treat the frictional force between the counter sink in the fixed part, can effectively avoid the catch to appear treating the phenomenon of fixed part free rotation relatively promptly.
When the bolt body is used, namely when two parts to be fixed need to be fastened through the bolt body, the locking ring is firstly embedded with the counter bore in the first part to be fixed (the embedding process of the locking ring and the counter bore in the first part to be fixed can be completed by adopting a press), then the end part of the external hexagonal wrench is inserted into the counter bore on the bolt body, the screw part in the bolt body passes through the through hole in the locking ring and the counter bore in the first part to be fixed and then is screwed with the threaded hole in the second part to be fixed, at the moment, the two parts to be fixed can be fastened through the bolt body, and after the two parts to be fixed are fastened through the bolt body, the head part in the bolt body can be abutted against the inner bottom part of the groove in the locking ring. After the two parts to be fixed are fastened through the bolt body, and the end part of the outer hexagonal wrench is pulled out of the sinking groove, the spring can push the guide pillar to move upwards for resetting, at the moment, the annular conical surface can push the ejector rod outwards under the action of the annular conical surface, finally, the inner end part of the ejector rod can be supported on the second annular step again, meanwhile, after the ejector rod moves outwards for resetting, the locking block can move downwards for resetting under the matching action of the first inclined surface on the ejector rod and the second inclined surface on the slide rod, and at the moment, the tooth head on the lower end surface of the locking block can be clamped with the locking groove on the locking ring, so that the locking of the bolt body and the locking ring is realized, and the self-locking of the bolt body is also realized; when two fixed parts are required to be disassembled, the end part of the outer hexagonal wrench is inserted into the sinking groove, after the end part of the outer hexagonal wrench is inserted into the sinking groove, the end part of the outer hexagonal wrench can push the guide pillar to move downwards to be in place, at the moment, the inner end part of the ejector rod can be separated from the second annular step, meanwhile, under the magnetic attraction of the magnet on the locking block and the bolt body, the locking block can move upwards to be in place, meanwhile, the locking block can drive the ejector rod to shrink inwards, after the locking block moves upwards to be in place, the tooth head on the lower end face of the locking block can be separated from the locking groove on the locking ring, therefore, the bolt body and the locking ring can be unlocked, the bolt body can be rotated through the outer hexagonal wrench to enable the bolt body to be screwed out from the fixed parts, and after the bolt body is completely screwed out from the fixed parts, the two parts can be.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (4)
1. A bolt assembly with a self-locking function is characterized in that: the bolt comprises a locking ring (1) and a bolt body (2), wherein the middle part of the locking ring (1) is provided with a groove (11) with an opening at the upper end and used for embedding a head part (21) in the bolt body (2), the bottom of the groove (11) is provided with a through hole (12) used for allowing a screw rod part (22) in the bolt body (2) to pass through, and the through hole (12) and the locking ring (1) are coaxially arranged; a plurality of locking grooves (13) which are uniformly distributed in the circumferential direction are arranged in the locking ring (1) positioned at the bottom of the groove (11), the middle part of the upper end surface of the head part (21) in the bolt body (2) is provided with a regular hexagonal sunk groove (23), the sunk groove (23) is used for being matched with the end part of the outer hexagonal wrench (3), four sliding cavities (24) which are uniformly distributed in the circumferential direction and have an opening at the lower end are arranged on the lower end surface of the head part (21) in the bolt body (2), an arc-shaped locking block (4) is connected in each sliding cavity (24) in a sliding manner, a tooth head (41) which is respectively used for being clamped with one locking groove (13) is arranged in the middle of the lower end surface of each locking block (4), the bolt body (2) is internally provided with a driving structure for driving the locking block (4) to move along the sliding cavity (24) so as to enable the tooth head (41) on the locking block (4) to be separated from the locking groove (13) or be clamped with the locking groove (13).
2. The bolt assembly with the self-locking function according to claim 1, wherein the driving structure comprises a guide post (5) and a spring (6), a blind hole (25) is arranged in the bolt body (2) below the sinking groove (23), the lower end of the guide post (5) is inserted into the blind hole (25) and is in sliding connection with the blind hole (25), the spring (6) is arranged in the blind hole (25), and two ends of the spring (6) respectively abut against the inner bottom of the blind hole (25) and the lower end surface of the guide post (5); a sliding rod (42) is integrally formed in the middle of the upper end face of each locking block (4), a sliding hole (26) for the sliding rod (42) to insert and slide is formed in the top of each sliding cavity (24), a sliding way (27) is arranged in the bolt body (2) between each sliding hole (26) and the blind hole (25), each sliding way (27) extends along the radial direction of the bolt body (2), a push rod (7) is connected in each sliding way (27) in a sliding mode, a slot (43) for inserting the outer end part of the push rod (7) is formed in one side, facing the push rod (7), of each sliding rod (42), a first inclined face (71) is formed in the lower surface of the outer end part of each push rod (7), and a second inclined face (44) matched with the first inclined face (71) to slide is formed in the inner bottom of each slot (43); a first annular step (51) and a second annular step (52) which are used for supporting the inner end part of the ejector rod (7) are arranged on the outer peripheral wall of the guide post (5), the first annular step (51) is positioned above the second annular step (52), an annular conical surface (53) which is small in upper part and large in lower part is arranged between the first annular step (51) and the second annular step (52), the upper end of the annular conical surface (53) is connected with the lower end of the first annular step (51), and the lower end of the annular conical surface (53) is connected with the upper end of the second annular step (52); magnets (8) are embedded on the upper end faces of the two end parts of each locking block (4), and the magnets (8) are magnetically attracted with the bolt body (2) to drive the locking blocks (4) to move upwards for resetting; an expansion hole (28) with the inner diameter larger than that of the blind hole (25) is arranged between the sinking groove (23) and the blind hole (25), and the expansion hole (28) is used for the guide pillar (5) to pass through; when the inner end part of the ejector rod (7) is abutted against the first annular step (51), the outer end part of the ejector rod (7) is completely retracted into the slide way (27), at the moment, the lock block (4) moves upwards to reset, and the tooth head (41) on the lock block (4) is separated from the lock groove (13) on the lock ring (1); when the inner end part of the ejector rod (7) is supported on the second annular step (52), the outer end part of the ejector rod (7) pushes the locking block (4) to move downwards to a proper position, and at the moment, a tooth head (41) on the locking block (4) is clamped with a locking groove (13) on the locking ring (1); a channel (29) for the mandril (7) to pass through and for the mandril (7) to be installed into the slideway (27) is arranged in the bolt body (2) positioned at the outer side of each sliding hole (26).
3. The bolt assembly with self-locking function according to claim 2, characterized in that the height of the guide post (5) above the first annular step (51) is the same as the height of the expansion hole (28).
4. The bolt assembly with the self-locking function according to claim 1, characterized in that a plurality of saw tooth grooves (14) are uniformly distributed on the peripheral wall of the locking ring (1), and each saw tooth groove (14) extends along the axial direction of the locking ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010917375.XA CN111810512A (en) | 2020-09-03 | 2020-09-03 | Bolt assembly with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010917375.XA CN111810512A (en) | 2020-09-03 | 2020-09-03 | Bolt assembly with self-locking function |
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| Publication Number | Publication Date |
|---|---|
| CN111810512A true CN111810512A (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010917375.XA Withdrawn CN111810512A (en) | 2020-09-03 | 2020-09-03 | Bolt assembly with self-locking function |
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| CN (1) | CN111810512A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013411A (en) * | 2022-05-25 | 2022-09-06 | 宁波华力兴紧固件有限公司 | High-adaptability anti-loosening fastener |
-
2020
- 2020-09-03 CN CN202010917375.XA patent/CN111810512A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013411A (en) * | 2022-05-25 | 2022-09-06 | 宁波华力兴紧固件有限公司 | High-adaptability anti-loosening fastener |
| CN115013411B (en) * | 2022-05-25 | 2024-05-10 | 宁波华力兴紧固件有限公司 | High-adaptability anti-loosening fastener |
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Application publication date: 20201023 |
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